There will be zero damage to their reputation.
It doesn't affect it as much as you believe. The Japanese are replacing their F-16s with F-35s. And F-15s with the new aircraft. US doesn't have any other aircraft for sale right now, so no threat to their market.
TFX is being designed as a complement to the F-35. The Turks plan to order a lot more F-35s. I easily estimate about 300 F-35s for them.
This is the latest from Turkey.
http://aa.com.tr/en/americas/turkish-defense-official-f-35-program-back-on-track/579530
This in particular is the most important.
I believe they will manufacture 100+ jets in Turkey, like they did with the F-16.
I will repeat this again. There are zero restrictions in any aspect. We have replaced the datalinks, IFFs and radio systems with our own stuff. The US has no influence there. Apache, P-8 etc are not restricted.
http://www.livefistdefence.com/2012/07/without-cismoa-indian-navy-works-p-8i.html
All equipment that was part of CISMOA have been replaced with Indian equivalent systems. But that was always the plan.
http://articles.economictimes.india...n-navy-s-p-8i-space-and-security-data-link-ii
So, nope, you are misinformed here. There are no restrictions on the aircraft.
For Indonesia and Malaysia, funding is a major cause for concern.
And for India it has always been bureaucracy.
http://economictimes.indiatimes.com...ty-could-go-up-to-75/articleshow/50075387.cms
You can read the rest of the article.
As for Malaysia-
http://defense-studies.blogspot.in/2013/06/malaysia-invests-in-sukhoi-fighter.html
They needed to boost their budget to get higher availability. Indonesia's and Malaysia's problem is financial, not Russia. India's problem is bureaucracy, not Russia. Russian jets require more maintenance, so most countries complain about that a lot. Otherwise if you pay for the spares, you get your spares.